Permutation-lock



(Model.) 2 Sheets-Sheet 2.

W. F. PETERS.

PBRMUTATION LOCK.

Patented Oct. l5, 1889.

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lock from the back, the disks being in posi- NITED STATES 'PATENT OFFICE.

WILLIAM F. PETERS, OF CINCINNATI, OHIO.

PERIVIUTATION-LOCK.

SPECIFICATION forming part of Letters Patent No. 412,977, dated October 15, 1889. Application tiled September 17, 1888. Serial No. 285,656. (Model.)

with a lug b, projecting from its outer face to engage with the lug d of the adjacent disk. The notch h3 in its edge has one sloping side, which serves as an inclined plane to raise the arm gi2 of the bolt-frame from the notches d of the outer disks. The disk B is also provided with the central hub h, which is received within the drum A. The face of the hub h is provided with a series of radial grooves h2. The dial F is provided with the stem f, which passes through the outer frame C and is received in the drum A. The end of the stem f is provided with a lug f, which projects slightly from the surface and eX- tends diametrically across the end of the stem. The lug f is adapted to be received in any of the grooves Win the hub bof the disk B. The stem f and the disk B are clamped together by the screw G2. To change the relative positions of the dial and the disk B, and in this way to change the combination, it is only necessary to loosen the screw G2 and turn the dial until the lug slips into a different groove Z22 from what it was in before. In this To all whom t may concern:

Be it known that I, WILLIAM F. PETERS, a citizen of the United States, and a resident of the city of Cincinnati, in the county of I-Iamilton and State of Ohio, have invented certain new and useful Improvements in Combination-Locks, of which the following is a specification.

The several features of my invention and the advantages arising from their use, conjointly or otherwise, will be apparent from the following description.

In the accompanying drawings, of this specification, Figure lis dial-index of the lock. Fig. 2 is forming part a view of the a view of the tion to accommodate the retracted bolt. Fig. 3 is a view similar to Fig. 2,but with the bolt in the position of locking. Fig. 4t is aview of the interior of the lock from the back, the disks being removed. Fig. 5 is a view similar to Fig. 1, with the innermost disk removed. Fig. @is a view similar to Fig. 5, with the next disk removed. Fig. 7 is a central vertical section of the lock. Fig. 8 is a view of the innermost Way as many different combinations can be disk. Fig. 9 illustrates one of the rings sepmade as there are radial grooves h2. The bolt arating the disks. Gis rigidly attached to the frame G', the two The lock is particularly adapted for applibeing preferably made in one piece. The

cation to drawers, but may be used for other purposes-as safes, for instance.

The box A, containing the 'operative parts of the lock, is set in the frame C of the drawer or safe or other article to which the lock is to be applied. The drum A projects inwardly from the outer face ct of the box A. At its base it is provided with the shouldera,which forms the bearing for the outermost disk. It is also provided with the groove d2, running lengthwise. Each disk D is provided with a notch CZ in the edge to receive the projecting arm g2 of the bolt-frame. Each disk is also provided with a lug d', extending toward each adjacent disk. The number of disks employed in the lock is immaterial. The innermost disk B diiers from the other disks in the combination. The disks D are mounted on the drum A, and are separated `from each other by the rings E. Each ring E is provided with a luge, which is received in the groove dtof the drum A', and is in this way prevented from turning. The disk Bis provided, like the disk D,

frame Gis provided with the slots g, through which the pins g pass, and are screwed or otherwise secured to the boX A. The frame and pins serve as a guide for the bolt. The arm g2 extends from the frame G or bolt over the disks. The spring Il, fastened at 011e side of the boX A, presses the bolt toward the disks.

The mode of operation of the device is readily understood from its construction. When by means of the dial the disks are so set that the notches in their edges come into line,l the spring H forces the arm g2into the notches, and in this way retracts the bolt. To throw out the bolt, the dial is turned so that the inclined side of the notch b3 of the disk. slides under the arm g2, which is thus raised, and rests on the circumferences of the disks, which keep the which the lock is attached locked.

What I claim as new, and desire to secure by Letters Patent, is---- In a combination-lock, the combination of the dial-stein j, having at its end the lug bolt out and the drawer or-other article to ICC f and the tumbler-disk B, havin g hub b', provided with grooves b2, the lug f', engaging any one of the said grooves at Will, and screw G2, passing through tumbler B and screwed to stem f and binding the same together, and having its head at the rear side of the tumbler B, substantially as and for the purposes specified.

2. In a combination-lock, the combination of the stem-dial f, provided With end lug f', and tumbler-disk B, having hub b', carry-ing grooves b2 for receiving the lug f, securingscrew G2, hollow sleeve or hub A, provided with shoulder a and inclosin g stelnf, and hub b of tumbler-disk B, and one or more tumblers D, rotatable on sleeve A and held from lateral displacement by the tumbler B and shoulder a', substantially as and for the purposes specied.

3. The combination ofthe casing A, having drum A', the bolt G, guide-frame G', arm g2, retractingspring Il, disk D, having notches d, disk B, having notch b3, and hub b', having grooves b2, dial F, having stem f, provided With lug f', and screw G, substantially as and for the purposes specified.

WILLIAM F. PETERS.

Attest:

WM. H. PUGH, G. A.` W. PAvER. 

